Looks promising, though I think I'll let you guys try it first :D . Seriously though, it does appear to be pretty pro-RKBA, but I'm only basing this on the preview. A pro-gun movie, that must mean hell hath frozen over, so yes, I am a little skeptical.

Actually, the rifle looks like an M1 Garand (see charging handle on the right side). And the rear sight post is definitely not a Mosin.